:root {
  --bg: #0a0e1a;
  --bg-2: #0d1424;
  --card-bg: #121a2e;
  --card-bg-2: #0f1729;
  --border: rgba(148, 163, 184, 0.15);
  --text: #e8edf5;
  --text-muted: #94a3b8;
  --accent: #00bcf2;
  --accent-2: #6c5ce7;
  --radius: 14px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* ── Temas por proveedor ── */
.theme-home  { --accent: #00bcf2; --accent-2: #6c5ce7; }
.theme-aws   { --accent: #ff9900; --accent-2: #ffb84d; }
.theme-azure { --accent: #0078d4; --accent-2: #50b0f0; }
.theme-gcp   { --accent: #4285f4; --accent-2: #34a853; }
.theme-juegos{ --accent: #10b981; --accent-2: #6c5ce7; }
.theme-perfil{ --accent: #6c5ce7; --accent-2: #00bcf2; }
.theme-cursos{ --accent: #f59e0b; --accent-2: #10b981; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

/* ── Fondo de particulas conectadas ── */
#tsparticles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
body > nav, body > header, body > section, body > footer {
  position: relative;
  z-index: 1;
}

/* ── Animacion de aparicion al hacer scroll ── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ── Boton "volver arriba" ── */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05070d;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s, filter 0.15s;
  z-index: 50;
}
.back-to-top:hover { filter: brightness(1.1); }
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: none; }

h1, h2, h3, h4, .logo, .nav-logo { font-family: 'Poppins', 'Inter', sans-serif; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.hidden { display: none !important; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.2s;
}
.navbar.scrolled { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); }

.navbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav-logo i { -webkit-text-fill-color: var(--accent); color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.nav-links a:hover { background: rgba(148, 163, 184, 0.08); color: var(--text); }
.nav-links a.active { color: var(--accent); background: rgba(148, 163, 184, 0.08); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 1rem;
  margin-left: auto;
}

/* ── Hero ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 24px 70px;
  text-align: center;
  background:
    radial-gradient(ellipse at 20% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 55%),
    radial-gradient(ellipse at 85% 10%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 50%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 20px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin: 0 0 14px;
  font-weight: 800;
}

.hero .accent-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 28px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-icon {
  font-size: 3.4rem;
  margin-bottom: 18px;
  color: var(--accent);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: filter 0.15s, transform 0.1s;
}
.btn:hover { filter: brightness(1.1); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05070d;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-disabled {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-muted);
  cursor: not-allowed;
  border: 1px dashed var(--border);
}
.btn-disabled:hover { filter: none; }

.btn-sm { padding: 8px 14px; font-size: 0.82rem; }
.btn-block { width: 100%; justify-content: center; }

/* ── Sections ── */
.section { padding: 64px 24px; }
.section-tight { padding: 44px 24px; }

.section-head { text-align: center; max-width: 620px; margin: 0 auto 40px; }
.section-head .eyebrow {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  display: block;
}
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 10px; }
.section-head p { color: var(--text-muted); margin: 0; }

/* ── Grids & cards ── */
.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform 0.15s, border-color 0.15s;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  margin-bottom: 16px;
}

.card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { color: var(--text-muted); font-size: 0.9rem; margin: 0; }

/* Provider selector cards (home page) */
.provider-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.provider-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.provider-card .provider-icon { font-size: 2.6rem; margin-bottom: 6px; }
.provider-card h3 { margin: 0; font-size: 1.2rem; }
.provider-card p { color: var(--text-muted); font-size: 0.88rem; margin: 0 0 8px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
}
.badge-ok { background: rgba(16, 185, 129, 0.15); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-soon { background: rgba(148, 163, 184, 0.12); color: var(--text-muted); border: 1px solid var(--border); }

/* Exam cards */
.exam-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.exam-card h3 { margin: 0; font-size: 1rem; }
.exam-card p { color: var(--text-muted); font-size: 0.86rem; margin: 0; flex: 1; }

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 50px 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--card-bg-2);
}
.empty-state i { font-size: 2rem; color: var(--accent); margin-bottom: 12px; display: block; }

/* Info list (benefits, service models, etc.) */
.info-card { display: flex; gap: 14px; align-items: flex-start; }
.info-card .num {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem;
}

/* ── Profile page ── */
.profile-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.profile-avatar {
  width: 130px; height: 130px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 2.6rem; font-weight: 800; color: #05070d;
  box-shadow: var(--shadow-lg);
}

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.tag {
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Cursos page: highlights ── */
.highlight-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 40px 0;
}
.highlight {
  text-align: center;
  padding: 24px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.highlight .highlight-num {
  font-size: 1.9rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.highlight .highlight-label { color: var(--text-muted); font-size: 0.82rem; margin-top: 4px; }

/* ── CTA banner ── */
.cta-banner {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 20%, var(--bg-2)), color-mix(in srgb, var(--accent-2) 18%, var(--bg-2)));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
}
.cta-banner h3 { margin: 0 0 8px; font-size: 1.3rem; }
.cta-banner p { color: var(--text-muted); margin: 0 0 20px; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding: 50px 24px 24px;
}
.footer-grid {
  max-width: 1180px;
  margin: 0 auto 30px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}
.footer h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); margin: 0 0 14px; }
.footer p { color: var(--text-muted); font-size: 0.88rem; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--text-muted); font-size: 0.88rem; transition: color 0.15s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1180px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.social-icons { display: flex; gap: 10px; }
.social-icons a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.15s, color 0.15s;
  color: var(--text-muted);
}
.social-icons a:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    padding: 10px;
  }
  .footer-grid { grid-template-columns: 1fr; }
}